Messages in this thread | | | Date | Sat, 9 Feb 2002 20:57:34 +0100 | From | Francois Romieu <> | Subject | Re: Problem with mke2fs on huge RAID-partition |
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Alan Cox <alan@lxorguk.ukuu.org.uk> : [...] > The limit is about 1Tb currently. You are hitting something else, perhaps > a driver or VM problem ?
Promise driver + 2.4.17, see: Message-ID: <20020108003953.A16356@fafner.intra.cogenit.fr> Message-ID: <20020119230852.A18674@se1.cogenit.fr>
| Intel | Promise -----------------+-------+-------- raid1 creation | fast | fast dd of=filesystem | fast | slow (*)
mkfs doesn't behaves too badly but it did when I first tried to raid1 the whole disks.
Raid1 is software only. As soon as a filesystem on the promise adapter comes into play, writes maxes out at 2,5Mo/s. The previous machine (old PA2012 motherboard) with 8 times less memory was able to stand 4~5Mo/s with vanilla broken kernel. Now it's running 2.4.18-pre3-ac2 but the behavior is the same with vanilla pre, vanilla + akpm ll, +ide patches. Feel free to ask if you want a test on a specific version. I have dedicated a partition on each disk for testing.
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